Excess-indicator.



' 1 AVAILABLE COPY H. O. SWOBODA.

EXCESS INDICATOR.

APPLICATION FILED MAY27. 1913.

1,144,335. Patented June 22, 1915.

WITNESSES I INVENTOR I M flw, w 2% X7 Avtlomey THE NORRIS PETERS 60.. FHOTULITHQ. WASHINGTON, D. c,

' mhammy Beiit-knovvn-thatl, HANs SWOBODA, a "citizen of the United states," anda resident of"- E dgevvojodfi'in the county of Allegheny i and State of Pennsylvania, have made a new and. useful Invention in', Exces s-Indicators,

ofwhi'ch the following is aspecificatio'nn v ,This invention relates to excess current in dicato'r's, that is, those, devices included- Mani electric circuit vvhich are no't actuated under normal conditions but vvhich are only" Eactuatecl uponjpassing moi"ethan the normal i 'amountj-ofcurrent throughjtheline.

Broadly stated," the presentkinvention conistitntes a) simple, and if-effective means for x au figj 1 .j'lamp circuitsj1vvhen an, increase of current ';'--bey0nfd ,the' normal-amount passes through ,fi ickering of ithe ,lights 7 in a the line, and if further increase of current 7 occurs, the a; flickering ;Will cease and f the j "lamps will become dimmed.

H 'fjThejfigure-in the drawing isya diagram- 2 a j, mati cal,. vievv"ofone form of-the invention;

v I Referring now to the drawing by numerals ,o;f}"r.eferen c:e: 1, and 2 are-the terminals of a r oneleg'of theiline-A and 3 and l are-thet'en T ;;I;Ini 1'iaf1 sFforlgthevother leg of, the -line BL; In. the conductor-Afisa series coil-50f a'relay' [6. The coil5 is heldron'a .-,bracket 7 which carries an armature-,8 on which is a contact 9 adapted to; coiitaotwithi the contact -10 when thecoill5'attracts armaturei 8.

I 11 i a coil havmg shunt i nsi connected 1 to the bracket at 13 and to .the conductor B-yiat 14.' 1fThes@ 1B coil 11 is P ov d divi edf n i in=thepresent instance connected to opposite 7 sides oftheiine; The 1 5' is connected'tofthe conductorjB-at' 17 and'18, and j a ea 1g'a i tgo s V -Within the coil llis the core 21'Which carthe' winding 16 is connected to conductor rie's an: insulated bar 22 supporting contacts I ture 23 nd' 24q adaptedtoycontaot with the'con- 5 tactsf25 ;and'26. a i I i IWhenj-ethe-parts'areinthe position shown, 1 the urrem yten en at 1', ip s ngt gh the "conductor .Afthrough the contact 23, up .sb'fthroughthe oil'5fandiout through 2. The

retur oircuitffzpassing through B may come U sthrou'gh,oontacts26 and 24:and 4 tan abnormal current 'pa S h lig. heilinshow i *5 willbejenergiz'ed so asto'pulldown jarma-i; d'" '10s to tactbetvveen.,9;;and, 10

erial 61,770, 2

through the brac et}? and the conductor iB.-.

The shunt vvinding, is reallythe Winding for the solenoid" core'21,"and as soonasthat part of the coil surrounded by the Winding 12 is energized the coil QIWlll have'motion,

imparted to it tobreak contacts 23, 241,25-

and 26, and having broken the contacts,-and

will he 'denergized so that the armature, 8, W111 move awayffrom the coil under. thefac will .come" on again. There still being more inasmuch as thecircuit is broken the coil 5 Y etio'n'of the spring '27. As soon as contacts i 9 andlO are broken, the switch consisting of i theigs'olenoid 21 and the bar and-its contacts :Will drop back into place and 'rnakecontact -W 2 25 and 2680 .thatthe lights than a' normal amount of current, thearmafture 8 will be pulled down, the coil 12 ener- -gized,' and thesolenoid Willhave movement imparted-to it to again break the current; v This will; happen With. sufficient rapidity to astheabnorma'l currentdemand ceases to exist, theiapp'aratus will be restored toithe position shown in the drawing. If the ab mined value, in stead of flickering the breaking of contacts 23 and 24, and 25 and 26 Will cause the current to; be shunted past" no rent'happens to be .above a deterthe flickering Will.cease, the lamps will I demand. a g

, While I have specifically described one form of'my invention, 1 do not Wish to be limited" to the, details thereof, i-but reserve the right to ':make such changes "and" altera v .tions as properl-v come" ithin the I scope I .of 'the claims Without-, departing from the I a spirit thereof. v v I? Having thus described my invention, What I claim is:

circuit, a switch in the main line-electric "circuit, electroresponsive means associated '10s closing the switch upon a predetermined ex'- f cessdemand on the main line and =electro-, ,responsivemeans to hold thefswltch. open -l];

therewith for intermittently opening and during a-greater excess load onfthemain line' dedimmed so that the consumer will know that an abnormal current demand isbeing i made and so that'he will rectify this'unusual I v.

1. The combination of a main line'electric it:

s5 thepoles of the switch through thedivided portions 15 and 16 ofthe coil 11', and- While 9 and for-increasing the resistance-in the'main I 5,112.5

'oolvrralvir, aoonronar'rolv' or PENNSYLVANIA.

at shunt tvindingm vvillthen b energized I i 

